The promoter of the araBAD operon from E. coli is activated in the presence of arabinose and the absence of glucose and directs expression of genes encoding enzymes required for arabinose metabolism.
Unlike the cases of lac and gal genes, where a repressor and an activator work together, here two activators work together: AraC and CAP.
#Unit 2. Cellular Organization#CELL CYCLE#Part B Pointers
